EP2537591B1 - Method for recovering non-magnetic ores from a suspension containing ore particle-magnetic particle agglomerates - Google Patents

Method for recovering non-magnetic ores from a suspension containing ore particle-magnetic particle agglomerates Download PDF

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Publication number
EP2537591B1
EP2537591B1 EP11170778.2A EP11170778A EP2537591B1 EP 2537591 B1 EP2537591 B1 EP 2537591B1 EP 11170778 A EP11170778 A EP 11170778A EP 2537591 B1 EP2537591 B1 EP 2537591B1
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Prior art keywords
magnetic
particles
ore
mass flow
separating
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EP11170778.2A
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German (de)
French (fr)
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EP2537591A1 (en
Inventor
Michael Diez
Argun Gökpekin
Wolfgang Krieglstein
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Siemens AG
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Siemens AG
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Application filed by Siemens AG filed Critical Siemens AG
Priority to PL11170778T priority Critical patent/PL2537591T3/en
Priority to EP11170778.2A priority patent/EP2537591B1/en
Priority to RU2014101624/03A priority patent/RU2014101624A/en
Priority to PE2013002769A priority patent/PE20140491A1/en
Priority to PCT/EP2012/060276 priority patent/WO2012175308A1/en
Priority to US14/128,758 priority patent/US8991612B2/en
Priority to AU2012272068A priority patent/AU2012272068A1/en
Priority to CN201280030058.XA priority patent/CN103608118A/en
Publication of EP2537591A1 publication Critical patent/EP2537591A1/en
Priority to CL2013002709A priority patent/CL2013002709A1/en
Publication of EP2537591B1 publication Critical patent/EP2537591B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/005—Pretreatment specially adapted for magnetic separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/005—Pretreatment specially adapted for magnetic separation
    • B03C1/015—Pretreatment specially adapted for magnetic separation by chemical treatment imparting magnetic properties to the material to be separated, e.g. roasting, reduction, oxidation

Definitions

  • a flotation cell or a flotation reactor is an ore-containing pulp, i. essentially a suspension of water, ground rock (gangue) and ground ore fed.
  • the pulp is charged with magnetic particles, including, for example, magnetic particles in the form of magnetite, to form so-called ore particle magnetic particle agglomerates (so-called "load process").
  • magnetic particles including, for example, magnetic particles in the form of magnetite
  • ore particle magnetic particle agglomerates prior hydrophobing of both the ore particles and the magnetic particles is usually required.
  • the formation of the orbital particle magnetic particle agglomerates produced essentially by hydrophobic interactions or forces of attraction takes place by mixing the starting materials taking into account certain mixing parameters, such as shearing forces, time, temperature, etc.
  • Separation of the corresponding ore particle magnetic particle agglomerates from the pulp is carried out by means of a (first) separation device, typically in the form or comprising a magnetic separator, wherein the magnetic ore particle magnetic particle agglomerates discharged from the pulp and into a so-called concentrate stream, which contains substantially the ore particle magnetic particle agglomerates, minor amounts of gait and water, be transferred.
  • a separation device typically in the form or comprising a magnetic separator
  • the ore particle magnetic particle agglomerates are incorporated into their constituents, i. Ore particles and magnetic particles, split, so that they are unbound in the form of a mixture next to each other (so-called "unload” process).
  • the ore particle-magnetic particle agglomerates are separated by means of a further or second separation device via chemical processes through the use of appropriate chemicals such as solvents or the like.
  • the separation of the substantially isolated magnetic particles from the ore particles and the other constituents of the concentrate stream is then equally within the "unload" process via a further or third separation device again typically in the form of or comprising a magnetic separator in which the magnetic particles magnetic be separated.
  • a further or third separation device again typically in the form of or comprising a magnetic separator in which the magnetic particles magnetic be separated.
  • separation into a mass flow containing first magnetic particles and a mass flow containing a second ore particles which are present separately from each other and basically or ideally only the respective pure substance, i. either pure magnetic particles or pure ore particles.
  • a generic method is for example off WO 2009/101070 A2 which relates to a process for the continuous recovery of non-magnetic ores from non-magnetic ore particles having pulp.
  • magnetic or magnetizable magnetic particles are fed to a pulp continuously flowing through a reactor, which form ore-magnetic particle agglomerates with the non-magnetic ore particles.
  • the ore magnetic particle agglomerates are moved by means of a magnetic field into an accumulation region of the reactor and removed from the accumulation region of the reactor.
  • the mass flow containing the first magnetic particle further comprises a certain proportion of ore particles and the mass flow containing the second ore particles furthermore has a certain proportion of magnetic particles. Accordingly, certain losses occur both with regard to the magnetic particles and the ore particles, since both the ore particles present in the first mass flow and the magnetic particles present in the second mass flow are not or only with considerable effort available for further use, which adversely affects the process yield effect. A detection of the composition of the corresponding first and second mass flow does not take place.
  • the invention is therefore based on the problem of specifying an improved method for obtaining non-magnetic ores, in particular with regard to monitoring the process yield of the "unload" process.
  • the problem is solved according to the invention by a method of the type mentioned above, which is characterized in that for determining the efficiency of at least one of the above separation processes at least one a measure of the proportion of ore particles in the first mass flow descriptive, the first mass flow associated information and / or at least one information determining a measure of the proportion of magnetic particles in the second mass flow, the second mass flow associated information is determined.
  • the method according to the invention provides for the first and / or second mass flow, ie the first magnetic particle containing Mass flow and / or the second ore particles containing mass flow, directly or indirectly or qualitatively or quantitatively to examine its composition. This is done on the basis of the determination of the at least one measure of the proportion of ore particles in the first mass flow descriptive, the first mass flow associated information and additionally or alternatively based on the determination of at least one measure of the proportion of magnetic particles in the second mass flow descriptive, the second mass flow associated information.
  • the information associated with the first mass flow represents a measure of the proportion of ore particles in the first mass flow, which ideally contains only magnetic particles
  • the information associated with the second mass flow is a measure of the proportion of magnetic particles in the second mass flow, which ideally contains only ore particles qualitatively or quantitatively determine the particular composition and a degree of pollution or a degree of purity of the respective mass flow.
  • the degree of contamination relates qualitatively or quantitatively to the proportion of unwanted particles contained in the respective mass flow; the degree of purity relates qualitatively or quantitatively to the proportion of desired particles contained in the respective mass flow.
  • the information associated with the first mass flow provides an indication of the efficiency of one or the abovementioned third separating device, which separates the magnetic particles from the mixture of separately present ore particles and magnetic particles.
  • the information associated with the second mass flow provides an indication of the efficiency of one or the above-mentioned second separation device which separates the ore particle magnetic particle agglomerates into a mixture of separately present ore particles and magnetic particles.
  • the respective information can also be a measure of the respective relative proportions of magnetic or ore particles indicate, so that conclusions can be drawn on the purity or the pollution of the respective mass flow from the ratio of relative to the respective mass flow unwanted particles to desired particles or vice versa.
  • the determination of the information associated with the first and / or the second mass flow preferably takes place by means of X-ray fluorescence analysis.
  • X-ray fluorescence analysis e.g., fluorescence spectroscopy
  • Magnetic particles in the sense of the invention are to be understood as meaning all magnetic or magnetizable particles.
  • ferromagnetic particles such as magnetite (Fe 3 O 4 ) are named.
  • the separation of the orb particulate magnetic particle agglomerates deposited from the suspension containing the ore particle magnetic particle agglomerates into the mixture of separately present ore particles and magnetic particles may be a process step of forming ore particle magnetic particle agglomerates of an ore particle and magnetic particles suspension which ore particle magnetic particle agglomerates comprise at least one ore particle and at least one magnetic particle, as well as a subsequent step of the deposition of the ore particle magnetic particle agglomerates from the suspension by means of a suitable separation device.
  • the separation device for separating the ore particle magnetic particle agglomerates from the suspension as a first separation device the separation device for separating the separated from the suspension ore particle magnetic particle agglomerates in the mixture of separately coexistent ore particles and magnetic particles as a second separation device and the separation device for Separation of the magnetic particles from the mixture may be referred to as the third separation device.
  • All separation devices may have one or more associated or associated separation regions, separation chambers, separation devices or the like.
  • the invention is provided on the basis of the information associated with the first and / or second mass flow at least one for the operation of at least one separation device for separating the ore particles magnetic particle agglomerates in a mixture of separately juxtaposed ore particles and magnetic particles and / or at least a separating device for separating the magnetic particles from the mixture of separately present ore particles and magnetic particles required operating information set and / or changed.
  • the information associated with the first and / or second mass flow is not used solely as an indication of the purity or contamination level of the mass flows or the process yield, in particular of the "unload" process, but also serves as a control signal for setting or changing at least one for the operation of at least one separating device for separating the ore particle magnetic particle agglomerates into a mixture of separately present ore particles and magnetic particles and / or for separating the magnetic particles from or a mixture of separately present ore particles and magnetic particles required operating information.
  • the respective operating information can be adjusted or optimized as a function of the respective information assigned to the first and / or second mass flow, so that the efficiency of the corresponding disconnecting device is dependent on the current, by the first and / or second mass flow associated (n) Optimize information (s) represented operating conditions and can increase the yield, in particular the "unload" process.
  • the information associated with the first and / or second mass flow is compared with at least one threshold value indicating a minimum or maximum concentration of ore particles or magnetic particles, the adjustment and / or modification of the operating information taking into account the threshold value.
  • a threshold among which of course If corresponding threshold value ranges are also understood, a particularly simple and rapid quality monitoring, in particular of the "unload” process, can take place and accordingly adjustments and / or changes to the at least one operating information of the corresponding separating device (s) can be made for the purpose of process optimization.
  • a threshold value which of course can also comprise corresponding tolerance ranges, is detected in the first magnetic particle-containing mass flow via the information associated therewith, i. the proportion of ore particles in the first mass flow is increased above a predetermined or predeterminable standard value, a corresponding adjustment in particular at least one operating information of the ore particle magnetic particle agglomerates in a mixture of separately juxtaposed ore particles and magnetic particles separating separator.
  • the proportion of magnetic particles in the second mass flow is increased above a predetermined or predeterminable standard value, whereupon a corresponding adaptation of at least one operating information of the separating device separating the magnetic particles from the mixture of separately present ore particles and magnetic particles takes place.
  • threshold values corresponding lower limits may also be provided which, based on the proportion of magnetic particles contained in the first mass flow, or not less than the fraction of ore particles contained in the second mass flow, must not be exceeded. This means that in this case, when the thresholds are undershot, a corresponding change and / or adjustment of the operating information of the corresponding separation device (s).
  • All processes are determined by several, communicating with each other decentralized or a central control device, recorded and evaluated in particular via suitable evaluation algorithms and optionally deposited in a storage means.
  • This procedure is expedient insofar as the adjustment and / or modification of the operating information of the separation of the ore particle magnetic particle agglomerates in a mixture of separately present ore particles and magnetic particles separation from the house optimized separation of the ore particles / magnetic particle agglomerates into separate components ensures, which in addition also has a significant influence on the yield of the separated by the further, the magnetic particles from the mixture of separately juxtaposed ore particles and magnetic particles separator.
  • the method according to the invention therefore preferably takes place an adjustment and / or change at least one operating information of the ore particles magnetic particle agglomerates in a mixture of separately juxtaposed ore particles and magnetic particles separating separator, before additionally adjusting and / or changing at least one operating information of or one of the magnetic particles from the mixture of separately side by side present ore particles and magnetic particles separating separator is made.
  • the separator for separating the ore particle magnetic particle agglomerates into a mixture of separately present ore particles and magnetic particles for example, the concentration and / or composition of the ore particles magnetic particle agglomerates separating agent which separates into its constituents and / or a shear rate of the second separation device and / or the residence time of the ore particle magnetic particle agglomerates in the second separation device and / or the composition of the suspension, in particular a water content of the suspension.
  • the separation device for separating the magnetic particles from the mixture of separately present ore particles and magnetic particles, for example at least one magnetic parameter, in particular the field strength and / or a field gradient, the magnetic device, and / or the second mass flow fluidically influencing means, in particular Form of orifices and / or displacement bodies, and / or the flow rate of the second mass flow and / or a purge flow can be used.
  • the adjustment of magnetic parameters is particularly effective when using a traveling magnetic field separator as a magnetic device associated with the corresponding separator. This also includes the setting of corresponding signal exciter forms, signal frequencies, signal phase positions of relative signal characteristics such as countercurrent, synchronization, velocity relative to the flow of the suspension or pulp, as well as further magnetic parameters influencing the magnetic field.
  • the determination of the information associated with the first and / or second mass flow can be continuous or discontinuous.
  • an information associated with the first and / or second mass flow is continuously determined at all times, so that a complete image of the process control with regard to the yield, in particular of the "unload" Process is given.
  • a discontinuous determination of the information associated with the first and / or the second mass flow a determination of the information associated with the first and / or the second mass flow at predetermined or predefinable times, for example once a minute. Both variants allow a so-called in situ or online determination of the information associated with the first and / or the second mass flow.
  • a discontinuous determination of the information associated with the first and / or the second mass flow also includes sampling from the first and / or second mass flow, which sample is tested separately for the method according to the invention in a laboratory for its corresponding composition.
  • a continuous regulation of the method takes place. Consequently, in the context of the method according to the invention, a measure of the proportion of ore particles in the first mass flow containing magnetic particles and / or a measure of the proportion of magnetic particles in the ore particle containing second mass flow can be continuously determined.
  • the continuous determination of the corresponding information associated with the first and / or second mass flow thus permits a continuous or dynamic control or optimization of the process, so that the process management is quickly, i.e., rapidly, subject to changing process parameters, such as ore composition. possibly even in real time, is readjusted.
  • the orbiting particle magnetic particle agglomerates in their constituents ie, in a mixture of separately present ore particles and magnetic particles, separating device
  • the supplied into this separator ore magnetic particle agglomerates chemically, in particular via a change in the pH Value and / or addition of chemical solvents and / or solvents, and / or physically, in particular by changing the temperature, and / or mechanically, in particular by an ultrasonic device associated with the corresponding separation device generated ultrasonic waves, to be separated.
  • the list is merely exemplary and in no way complete, so that other, equally effective ways of separating the ore particle magnetic particle agglomerates are conceivable in their components.
  • the present invention also relates to a device for obtaining non-magnetic ores from a suspension containing ore particles and magnetic particle agglomerates.
  • the apparatus comprises at least one mixing reactor for mixing a nonmagnetic ore particles and magnetic particle containing suspension to form ore particle magnetic particle agglomerates, at least one first separator having at least one magnetic device for separating the ore particle magnetic particle agglomerates from the suspension, at least one second separation device for separation the ore particle magnetic particle agglomerates in a mixture of separately present ore particles and magnetic particles, at least a third separation device for separating the magnetic particles from the mixture of separately present ore particles and magnetic particles, at least one detection means for determining at least one of the degree of the proportion of ore particles in a magnetic particle containing mass flow information indicating and / or for determining at least one measure of the proportion of magnetic particles in an E and at least one control and / or regulating device, which control and / or regulating device comprises at least one machine
  • the invention further relates to a control and / or regulating device for controlling and / or regulating a device described above for carrying out the method according to the invention.
  • the control and / or regulating device comprises at least one machine-readable program means which comprises control and / or regulating commands for controlling and / or regulating the device for carrying out the method described above.
  • the invention further relates to a machine-readable program means for a control and / or regulating device as described above.
  • FIG. 1 shows a block diagram of the process according to the invention for obtaining non-magnetic ores from a suspension containing ore particles and magnetic particle agglomerates. It is preferably a continuous process.
  • a pulp P magnetic particles M is fed to a mixing apparatus connected to a device for extracting non-magnetic ores from a non-magnetic ore particles and magnetic particles M suspension, which device can be referred to as a magnetic flotation cell.
  • the pulp P consists essentially of non-magnetic ore particles E, such as Cu 2 S particles, the magnetic particles M are, for example in the form of magnetite (Fe 3 O 4 ), optionally already hydrophobic, before. It is carried out with the addition of other additives, such as in particular water repellents H, which allow a hydrophobization of the ore particles E, a mixing process of the substances supplied in the mixing reactor.
  • the so-called "load” process takes place in which the hydrophobized magnetic particles M are deposited on the hydrophobized ore particles E or interact with them to form ore magnetic particle agglomerates A.
  • the ore particle magnetic particle agglomerates A contained in the suspension comprise at least one hydrophobized magnetic particle M and at least one hydrophobized ore particle E.
  • the magnetic particles M are to be regarded as carrier particles for the ore particles E.
  • Essential influencing factors for the formation of an efficient yield of ore particle magnetic particle agglomerates A are the mixing time, shearing forces prevailing during the mixing process and, if appropriate, the freeness or respectively the particle size or particle size distribution of the ore particles E. contained in the pulp P.
  • the ore particle magnetic particle agglomerates A are separated from gait G. Separation takes place magnetically by means of a first separation device having a magnetic device.
  • the magnetic particles magnetic particle agglomerates A which are magnetic due to the magnetic particles M, accumulate in the region of the magnetic device and can be discharged in such a way and for the most part separated from the gait G.
  • Non-agglomerated magnetic particles M and ore particles E as well as further pulp P seen as a disperse system are removed as residues (so-called tailing) (see arrow 3).
  • the concentrated ore particle magnetic particle agglomerates A are fed to a second separation apparatus in which the ore particle magnetic particle agglomerates A are separated into a mixture of separately juxtaposed unbound ore particles E and magnetic particles M. so-called "unload” process).
  • the separation of the ore particle magnetic particle agglomerates A for example, chemically, in particular via a change in the pH and / or an addition of chemical release agents T take place. Also conceivable is the use of ultrasound waves introduced into the ultrasonic device associated with the second separating device.
  • the "unload" process is largely completed, i. there is a mixture of separately present unbound ore particles E and magnetic particles M.
  • the isolated magnetic particles M are magnetically separated from the non-magnetic ore particles E via a third separating device comprising a magnetic device, in particular a traveling-field magnetic separator, and converted into a mass flow MS1 containing a first magnetic particle M.
  • the first mass flow MS1 can be recycled, so that the magnetic particles M contained in it can be reused at the beginning of the process (see arrow 10). Accordingly, the overall process can be optimized in economic and environmental terms.
  • the ore particles E are converted into a mass stream MS2 containing a second ore particle E, which is subsequently dehydrated or dried (cf., box 7), so that dried ore particles E are largely present after dehydration or drying.
  • the water W is discharged separately.
  • the first mass flow MS1 contains only magnetic particles M and the second mass flow MS2 exclusively ore particles E.
  • this is difficult to realize in practice, so that there are certain losses of magnetic particles bound in the first water flow MS1 and magnetic particles bound in the second mass flow MS2 M is coming.
  • the method according to the invention is characterized in that a determination of at least one information I1 describing a measure of the proportion of ore particles E in the first mass flow MS1 and associated with the first mass flow MS1 and / or a determination of at least one measure of the proportion of magnetic particles M in the second mass flow MS2 descriptive, the second mass flow MS2 associated information 12 takes place. Accordingly, the composition, the degree of purity or degree of contamination of the respective mass flows MS1, MS2, which likewise represents a measure of the yield, in particular of the "unload” process, can be detected and taken into account for the process control of the continuously operating method according to the invention.
  • the determination of the information I1, 12 assigned to the first and / or the second mass flow MS1, MS2 preferably takes place continuously by means of X-ray fluorescence analysis.
  • At least one operating information required for the operation of the second and / or third separation device is adjusted and / or changed on the basis of the information I1, 12 assigned to the first and / or second mass flow MS1, MS2. Consequently, with regard to the continuously detected purity level or the continuously detected composition of the mass flows MS1, MS2, a control signal is given to the second and / or third separation device, wherein based on the control signal corresponding operating information or operating parameters can be optimized.
  • the information I1, 12 assigned to the first and / or second mass flow MS1, MS2 can be compared with at least one threshold value indicating a minimum or maximum concentration of ore particles E or magnetic particles M. Accordingly, the setting and / or change of the operating information takes place taking into account the threshold value.
  • the threshold value can also be seen as a threshold range and take into account certain tolerance ranges.
  • the concentration and / or composition of a release agent T separating the ore particle magnetic particle agglomerates A into their constituents and / or a shear rate of the second separation device and / or the residence time of the ore particle magnetic particle agglomerates A in the second separation device and / or the composition of the Pulp P in particular a water content of the pulp P can be used.
  • the third separator e.g. at least one magnetic parameter, in particular the field strength and / or a field gradient of the magnetic device, and / or the second mass flow fluidly influencing means, in particular in the form of orifices and / or displacement bodies, and / or the flow rate of the second mass flow and / or a purge flow become.
  • the boxes 8, 9 shown in dashed lines indicate that, on the basis of the knowledge of the composition of the mass flows MS1, MS2 obtained by the first or second information I1, 12, a renewed mixing process may be necessary (cf. 8) may be performed to remix residues, ie non-separated or split ore magnetic particle agglomerates A, after the separation performed in the fifth process step.
  • a more highly concentrated separating agent T which in turn can be controlled as a function of the first or second information I1, 12. Accordingly, a subsequent dewatering or drying (see Box 9).
  • Particular embodiments of the method according to the invention provide that initially only at least one operating information of the second separating device is set and / or changed and, after the change of the corresponding at least one operating information, a new determination of the information I1 assigned to the first and / or second mass flow MS1, MS2, 12 takes place.

Description

Die Erfindung betrifft ein Verfahren zur Gewinnung von nichtmagnetischen Erzen aus einer Erzpartikel-Magnetpartikel-Agglomerate enthaltenden Suspension, umfassend die Schritte:

  • Trennen von aus der Suspension abgeschiedenen Erzpartikel-Magnetpartikel-Agglomeraten in ein Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln,
  • Abtrennen der Magnetpartikel aus dem Gemisch,
  • Bilden eines ersten Magnetpartikel enthaltenden Massestroms und eines zweiten Erzpartikel enthaltenden Massestroms.
The invention relates to a method for obtaining non-magnetic ores from a suspension containing ore particles and magnetic particle agglomerates, comprising the steps:
  • Separating ore particle magnetic particle agglomerates separated from the suspension into a mixture of separately present ore particles and magnetic particles,
  • Separating the magnetic particles from the mixture,
  • Forming a first magnetic particle containing mass flow and a second ore particles containing mass flow.

Der Einsatz von Flotationszellen zur Gewinnung von Erzen aus erzhaltigem Schüttgut ist weithin bekannt. Dabei wird einer Flotationszelle bzw. einem Flotationsreaktor eine erzhaltige Pulpe, d.h. im Wesentlichen eine Suspension aus Wasser, gemahlenem Gestein (Gangart) und gemahlenem Erz, zugeführt.The use of flotation cells for the extraction of ore from ore-bearing bulk material is well known. In this case, a flotation cell or a flotation reactor is an ore-containing pulp, i. essentially a suspension of water, ground rock (gangue) and ground ore fed.

Im Rahmen sogenannter magnetischer Flotationsverfahren wird die Pulpe zur Ausbildung sogenannter Erzpartikel-Magnetpartikel-Agglomerate mit Magnetpartikeln, worunter beispielsweise magnetische Partikel in Form von Magnetit fallen, beladen (sogenannter "load-Prozess"). Zur Ausbildung der Erzpartikel-Magnetpartikel-Agglomerate ist üblicherweise eine vorherige Hydrophobierung sowohl der Erzpartikel als auch der Magnetpartikel erforderlich. Die Bildung der sonach im Wesentlichen über hydrophobe Wechselwirkungen respektive Anziehungskräfte erzeugten Erzpartikel-Magnetpartikel-Agglomerate erfolgt durch Vermischen der Ausgangsstoffe unter Berücksichtigung bestimmter Mischparameter, wie Scherkräfte, Zeit, Temperatur etc..In the context of what are known as magnetic flotation processes, the pulp is charged with magnetic particles, including, for example, magnetic particles in the form of magnetite, to form so-called ore particle magnetic particle agglomerates (so-called "load process"). To form the ore particle magnetic particle agglomerates, prior hydrophobing of both the ore particles and the magnetic particles is usually required. The formation of the orbital particle magnetic particle agglomerates produced essentially by hydrophobic interactions or forces of attraction takes place by mixing the starting materials taking into account certain mixing parameters, such as shearing forces, time, temperature, etc.

Eine Abtrennung der entsprechenden Erzpartikel-Magnetpartikel-Agglomerate aus der Pulpe erfolgt mittels einer (ersten) Trennvorrichtung typischerweise in Form eines oder umfassend einen magnetischen Separator, wobei die magnetischen Erzpartikel-Magnetpartikel-Agglomerate aus der Pulpe ausgetragen und in einen sogenannten Konzentratstrom, welcher im Wesentlichen die Erzpartikel-Magnetpartikel-Agglomerate, kleinere Mengen an Gangart sowie Wasser enthält, überführt werden.Separation of the corresponding ore particle magnetic particle agglomerates from the pulp is carried out by means of a (first) separation device, typically in the form or comprising a magnetic separator, wherein the magnetic ore particle magnetic particle agglomerates discharged from the pulp and into a so-called concentrate stream, which contains substantially the ore particle magnetic particle agglomerates, minor amounts of gait and water, be transferred.

Anschließend werden die Erzpartikel-Magnetpartikel-Agglomerate in ihre Bestandteile, d.h. Erzpartikel und Magnetpartikel, gespalten, so dass diese in Form eines Gemisches ungebunden nebeneinander vorliegen (sogenannter "unload"-Prozess). Typischerweise erfolgt die Trennung der Erzpartikel-Magnetpartikel-Agglomerate mittels einer weiteren oder zweiten Trennvorrichtung über chemische Verfahren durch den Einsatz entsprechender Chemikalien wie Lösungsmittel oder dergleichen.Subsequently, the ore particle magnetic particle agglomerates are incorporated into their constituents, i. Ore particles and magnetic particles, split, so that they are unbound in the form of a mixture next to each other (so-called "unload" process). Typically, the ore particle-magnetic particle agglomerates are separated by means of a further or second separation device via chemical processes through the use of appropriate chemicals such as solvents or the like.

Das Abtrennen der im Wesentlichen isoliert vorliegenden Magnetpartikel von den Erzpartikeln und den übrigen Bestandteilen des Konzentratstroms erfolgt anschließend gleichermaßen im Rahmen des "unload"-Prozesses über eine weitere oder dritte Trennvorrichtung wiederum typischerweise in Form eines oder umfassend einen magnetischen Separator, in welcher die Magnetpartikel magnetisch abgetrennt werden. Daraufhin erfolgt eine Auftrennung in einen ersten Magnetpartikel enthaltenden Massestrom und einen zweiten Erzpartikel enthaltenden Massestrom, welche getrennt voneinander vorliegen und grundsätzlich bzw. idealerweise nur den jeweiligen Reinstoff, d.h. entweder reine Magnetpartikel oder reine Erzpartikel, enthalten.The separation of the substantially isolated magnetic particles from the ore particles and the other constituents of the concentrate stream is then equally within the "unload" process via a further or third separation device again typically in the form of or comprising a magnetic separator in which the magnetic particles magnetic be separated. This is followed by separation into a mass flow containing first magnetic particles and a mass flow containing a second ore particles, which are present separately from each other and basically or ideally only the respective pure substance, i. either pure magnetic particles or pure ore particles.

Ein gattungsgemäßes Verfahren ist beispielsweise aus WO 2009/101070 A2 bekannt, welche ein Verfahren zur kontinuierlichen Gewinnung von nichtmagnetischen Erzen aus einer nichtmagnetische Erzpartikel aufweisenden Pulpe betrifft. Dabei werden einer einen Reaktor kontinuierlich durchströmenden Pulpe magnetische oder magnetisierbare Magnetpartikel zugeführt, welche mit den nichtmagnetischen Erzpartikeln Erz-Magnetpartikel-Agglomerate bilden. Die Erz-Magnetpartikel-Agglomerate werden mittels eines Magnetfelds in einen Akkumulationsbereich des Reaktors bewegt und aus dem Akkumulationsbereich des Reaktors abgeführt.A generic method is for example off WO 2009/101070 A2 which relates to a process for the continuous recovery of non-magnetic ores from non-magnetic ore particles having pulp. In this case, magnetic or magnetizable magnetic particles are fed to a pulp continuously flowing through a reactor, which form ore-magnetic particle agglomerates with the non-magnetic ore particles. The ore magnetic particle agglomerates are moved by means of a magnetic field into an accumulation region of the reactor and removed from the accumulation region of the reactor.

Bei den bekannten Verfahren ist es regelmäßig problematisch, dass der erste Magnetpartikel enthaltende Massestrom weiterhin einen gewissen Anteil an Erzpartikeln und der zweite Erzpartikel enthaltende Massestrom weiterhin einen gewissen Anteil an Magnetpartikeln aufweist. Entsprechend treten sowohl betreffend die Magnetpartikel als auch die Erzpartikel bestimmte Verluste auf, da sowohl die in dem ersten Massestrom vorhandenen Erzpartikeln als auch die in dem zweiten Massestrom vorhandenen Magnetpartikel einer weiteren Verwendung nicht oder nur mit erheblichem Aufwand zugänglich sind, was sich negativ auf die Prozessausbeute auswirkt. Eine Erfassung der Zusammensetzung des entsprechenden ersten bzw. zweiten Massestroms findet nicht statt.In the known methods, it is regularly problematic that the mass flow containing the first magnetic particle further comprises a certain proportion of ore particles and the mass flow containing the second ore particles furthermore has a certain proportion of magnetic particles. Accordingly, certain losses occur both with regard to the magnetic particles and the ore particles, since both the ore particles present in the first mass flow and the magnetic particles present in the second mass flow are not or only with considerable effort available for further use, which adversely affects the process yield effect. A detection of the composition of the corresponding first and second mass flow does not take place.

Der Erfindung liegt sonach das Problem zugrunde, ein, insbesondere im Hinblick auf eine Überwachung der Prozessausbeute des "unload"-Prozesses, verbessertes Verfahren zur Gewinnung von nichtmagnetischen Erzen anzugeben.The invention is therefore based on the problem of specifying an improved method for obtaining non-magnetic ores, in particular with regard to monitoring the process yield of the "unload" process.

Das Problem wird erfindungsgemäß durch ein Verfahren der eingangs genannten Art gelöst, welches sich dadurch auszeichnet, dass zur Ermittlung der Effizienz wenigstens eines der vorstehend genannten Trennvorgänge wenigstens eine ein Maß für den Anteil an Erzpartikeln in dem ersten Massestrom beschreibende, dem ersten Massestrom zugeordnete Information und/oder wenigstens eine ein Maß für den Anteil an Magnetpartikeln in dem zweiten Massestrom beschreibende, dem zweiten Massestrom zugeordnete Information ermittelt wird.The problem is solved according to the invention by a method of the type mentioned above, which is characterized in that for determining the efficiency of at least one of the above separation processes at least one a measure of the proportion of ore particles in the first mass flow descriptive, the first mass flow associated information and / or at least one information determining a measure of the proportion of magnetic particles in the second mass flow, the second mass flow associated information is determined.

Das erfindungsgemäße Verfahren sieht vor, den ersten und/oder zweiten Massestrom, d.h. den ersten Magnetpartikel enthaltenden Massestrom und/oder den zweiten Erzpartikel enthaltenden Massestrom, direkt oder indirekt bzw. qualitativ oder quantitativ auf seine bzw. ihre Zusammensetzung zu untersuchen. Dies erfolgt anhand der Ermittlung der wenigstens einen ein Maß für den Anteil an Erzpartikeln in dem ersten Massestrom beschreibenden, dem ersten Massestrom zugeordneten Information sowie zusätzlich oder alternativ anhand der Ermittlung der wenigstens einen ein Maß für den Anteil an Magnetpartikeln in dem zweiten Massestrom beschreibenden, dem zweiten Massestrom zugeordneten Information. Entsprechend stellt die dem ersten Massestrom zugeordnete Information ein Maß für den Anteil an Erzpartikeln in dem idealerweise nur Magnetpartikel enthaltenden ersten Massestrom und die dem zweiten Massestrom zugeordnete Information ein Maß für den Anteil an Magnetpartikeln in dem idealerweise nur Erzpartikel enthaltenden zweiten Massestrom dar. Demzufolge lässt sich qualitativ oder quantitativ die jeweilige Zusammensetzung sowie ein Verschmutzungsgrad bzw. ein Reinheitsgrad des jeweiligen Massestroms ermitteln.The method according to the invention provides for the first and / or second mass flow, ie the first magnetic particle containing Mass flow and / or the second ore particles containing mass flow, directly or indirectly or qualitatively or quantitatively to examine its composition. This is done on the basis of the determination of the at least one measure of the proportion of ore particles in the first mass flow descriptive, the first mass flow associated information and additionally or alternatively based on the determination of at least one measure of the proportion of magnetic particles in the second mass flow descriptive, the second mass flow associated information. Correspondingly, the information associated with the first mass flow represents a measure of the proportion of ore particles in the first mass flow, which ideally contains only magnetic particles, and the information associated with the second mass flow is a measure of the proportion of magnetic particles in the second mass flow, which ideally contains only ore particles qualitatively or quantitatively determine the particular composition and a degree of pollution or a degree of purity of the respective mass flow.

Der Verschmutzungsgrad betrifft qualitativ oder quantitativ den Anteil an in dem jeweiligen Massestrom enthaltenen unerwünschten Partikeln, der Reinheitsgrad betrifft entsprechend qualitativ oder quantitativ den Anteil an in dem jeweiligen Massestrom enthaltenen erwünschten Partikeln.The degree of contamination relates qualitatively or quantitatively to the proportion of unwanted particles contained in the respective mass flow; the degree of purity relates qualitatively or quantitatively to the proportion of desired particles contained in the respective mass flow.

Insofern liefert die dem ersten Massestrom zugeordnete Information einen Hinweis auf den Wirkungsgrad einer oder der vorstehend genannten dritten Trennvorrichtung, welche die Magnetpartikel aus dem Gemisch separat nebeneinander vorliegender Erzpartikel und Magnetpartikel trennt. Die dem zweiten Massestrom zugeordnete Information liefert insbesondere einen Hinweis auf den Wirkungsgrad einer oder der vorstehend genannten zweiten Trennvorrichtung, welche die Erzpartikel-Magnetpartikel-Agglomerate in ein Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln trennt.In this respect, the information associated with the first mass flow provides an indication of the efficiency of one or the abovementioned third separating device, which separates the magnetic particles from the mixture of separately present ore particles and magnetic particles. In particular, the information associated with the second mass flow provides an indication of the efficiency of one or the above-mentioned second separation device which separates the ore particle magnetic particle agglomerates into a mixture of separately present ore particles and magnetic particles.

Die jeweiligen Informationen können auch ein Maß für die jeweiligen verhältnismäßigen Anteile an Magnet- bzw. Erzpartikeln angeben, so dass sich aus dem Verhältnis an bezogen auf den jeweiligen Massestrom unerwünschten Partikeln zu erwünschten Partikeln oder umgekehrt, Rückschlüsse auf die Reinheit bzw. die Verschmutzung des jeweiligen Massestroms anstellen lassen.The respective information can also be a measure of the respective relative proportions of magnetic or ore particles indicate, so that conclusions can be drawn on the purity or the pollution of the respective mass flow from the ratio of relative to the respective mass flow unwanted particles to desired particles or vice versa.

Im Gegensatz zu den aus dem Stand der Technik bekannten Verfahren kann insbesondere der "unload"-Prozess somit auf seine Effizienz bzw. Ausbeute überwacht werden, wodurch selbstverständlich mittelbar auch Rückschlüsse auf die Effizienz bzw. Ausbeute des Gesamtprozesses erhalten werden können.In contrast to the methods known from the prior art, in particular the "unload" process can thus be monitored for its efficiency or yield, whereby it is of course also indirectly possible to draw conclusions about the efficiency or yield of the overall process.

Es ist im Rahmen des erfindungsgemäßen Verfahrens nicht zwingend notwendig, stets beide Informationen zu ermitteln. Mithin kann es ausreichend sein, wenn lediglich die dem ersten Massestrom zugeordnete Information ermittelt wird. Selbstverständlich wird durch die Ermittlung sowohl der dem ersten als auch dem zweiten Massestrom zugeordneten Information ein aussagekräftiges Bild über die Effizienz bzw. Ausbeute des "unload"-Prozesses und somit mittelbar auch über die Effizienz bzw. Ausbeute des Gesamtprozesses gegeben.It is not absolutely necessary in the context of the method according to the invention to always determine both information. Thus, it may be sufficient if only the information associated with the first mass flow is determined. Of course, the determination of both the information associated with the first and the second mass flow provides a meaningful picture of the efficiency or yield of the "unload" process and thus indirectly also of the efficiency or yield of the overall process.

Die Ermittlung der dem ersten und/oder dem zweiten Massestrom zugeordneten Information erfolgt bevorzugt mittels Röntgenfluoreszenzanalyse. Selbstverständlich sind auch andere geeignete Methoden zur Ermittlung der jeweiligen Information(en) denkbar.The determination of the information associated with the first and / or the second mass flow preferably takes place by means of X-ray fluorescence analysis. Of course, other suitable methods for determining the respective information (s) are conceivable.

Als Magnetpartikel im erfindungsgemäßen Sinne sind sämtliche magnetischen oder magnetisierbaren Partikel zu verstehen. Lediglich beispielhaft werden ferromagnetische Partikel, wie Magnetit (Fe3O4), genannt.Magnetic particles in the sense of the invention are to be understood as meaning all magnetic or magnetizable particles. By way of example only, ferromagnetic particles such as magnetite (Fe 3 O 4 ) are named.

Als Erzpartikel im erfindungsgemäßen Sinne sind sämtliche nichtmagnetische, d.h. weder ursprünglich oder im Verhältnis zu den Magnetpartikeln nur schwach magnetische noch magnetisierbare oder im Verhältnis zu den Magnetpartikeln nur schwach magnetisierbare Erzpartikel zu verstehen. Lediglich beispielsweise werden Kupfererze, wie Chalkosin (Cu2S), genannt.As ore particles in the sense of the invention are all non-magnetic, ie neither originally or in relation to the magnetic particles only weak magnetic still magnetizable or in relation to the magnetic particles only weakly magnetizable ore particles to understand. Only For example, copper ores, such as chalcogen (Cu 2 S), called.

Die im Rahmen des erfindungsgemäßen Verfahrens durchgeführte Trennung von aus der Suspension abgeschiedenen Erzpartikel-Magnetpartikel-Agglomerate in das Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln wie auch die Abtrennung der Magnetpartikel aus dem Gemisch erfolgt über geeignete Trennvorrichtungen.The separation of the orb particulate magnetic particle agglomerates separated from the suspension into the mixture of separately present ore particles and magnetic particles as well as the separation of the magnetic particles from the mixture takes place via suitable separation devices.

Der im Rahmen des erfindungsgemäßen Verfahrens vorgesehenen Trennung der aus der Erzpartikel-Magnetpartikel-Agglomerate enthaltenden Suspension abgeschiedenen Erzpartikel-Magnetpartikel-Agglomerate in das Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln kann ein Verfahrensschritt der Bildung von Erzpartikel-Magnetpartikel-Agglomeraten aus einer Erzpartikel und Magnetpartikel enthaltenden Suspension, welche Erzpartikel-Magnetpartikel-Agglomerate wenigstens einen Erzpartikel und wenigstens einen Magnetpartikel umfassen, sowie ein diesem nachfolgender Verfahrensschritt der Abscheidung der Erzpartikel-Magnetpartikel-Agglomerate aus der Suspension mittels einer geeigneten Trennvorrichtung vorausgehen.The separation of the orb particulate magnetic particle agglomerates deposited from the suspension containing the ore particle magnetic particle agglomerates into the mixture of separately present ore particles and magnetic particles may be a process step of forming ore particle magnetic particle agglomerates of an ore particle and magnetic particles suspension which ore particle magnetic particle agglomerates comprise at least one ore particle and at least one magnetic particle, as well as a subsequent step of the deposition of the ore particle magnetic particle agglomerates from the suspension by means of a suitable separation device.

Somit kann die Trennvorrichtung zur Abscheidung der Erzpartikel-Magnetpartikel-Agglomerate aus der Suspension als erste Trennvorrichtung, die Trennvorrichtung zur Trennung der aus der Suspension abgeschiedenen Erzpartikel-Magnetpartikel-Agglomerate in das Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln als zweite Trennvorrichtung und die Trennvorrichtung zur Abtrennung der Magnetpartikel aus dem Gemisch als dritte Trennvorrichtung bezeichnet werden.Thus, the separation device for separating the ore particle magnetic particle agglomerates from the suspension as a first separation device, the separation device for separating the separated from the suspension ore particle magnetic particle agglomerates in the mixture of separately coexistent ore particles and magnetic particles as a second separation device and the separation device for Separation of the magnetic particles from the mixture may be referred to as the third separation device.

Sämtliche Trennvorrichtungen können eine oder mehrere diesen zugehörige oder zugeordnete Trennbereiche, Trennkammern, Trenneinrichtungen oder dergleichen aufweisen.All separation devices may have one or more associated or associated separation regions, separation chambers, separation devices or the like.

In zweckmäßiger Weiterbildung der Erfindung ist es vorgesehen, anhand der dem ersten und/oder zweiten Massestrom zugeordneten Information wenigstens eine für den Betrieb wenigstens einer Trennvorrichtung zur Trennung der Erzpartikel-Magnetpartikel-Agglomerate in ein Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln und/oder wenigstens einer Trennvorrichtung zur Abtrennung der Magnetpartikel aus dem Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln erforderliche Betriebsinformation eingestellt und/oder verändert wird. Mithin wird die dem ersten und/oder zweiten Massestrom zugeordnete Information nicht allein als Hinweis auf den Reinheits- bzw. Verschmutzungsgrad der Masseströme respektive die Prozessausbeute insbesondere des "unload"-Prozesses verwendet, sondern dient gleichermaßen als Steuersignal für die Einstellung bzw. Änderung wenigstens einer für den Betrieb wenigstens einer Trennvorrichtung zur Trennung der Erzpartikel-Magnetpartikel-Agglomerate in ein Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln und/oder zur Abtrennung der Magnetpartikel aus dem oder einem Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln erforderlichen Betriebsinformation. Demzufolge kann die jeweilige Betriebsinformation in Abhängigkeit der jeweiligen dem ersten und/oder zweiten Massestrom zugeordneten Information angepasst bzw. optimiert werden, so dass sich der Wirkungsgrad der entsprechenden Trennvorrichtung in Abhängigkeit der aktuellen, durch die dem ersten und/oder zweiten Massestrom zugeordnete(n) Information(en) repräsentierten Betriebsbedingungen optimieren und sich die Ausbeute insbesondere des "unload"-Prozesses steigern lässt.In an expedient development of the invention, it is provided on the basis of the information associated with the first and / or second mass flow at least one for the operation of at least one separation device for separating the ore particles magnetic particle agglomerates in a mixture of separately juxtaposed ore particles and magnetic particles and / or at least a separating device for separating the magnetic particles from the mixture of separately present ore particles and magnetic particles required operating information set and / or changed. Consequently, the information associated with the first and / or second mass flow is not used solely as an indication of the purity or contamination level of the mass flows or the process yield, in particular of the "unload" process, but also serves as a control signal for setting or changing at least one for the operation of at least one separating device for separating the ore particle magnetic particle agglomerates into a mixture of separately present ore particles and magnetic particles and / or for separating the magnetic particles from or a mixture of separately present ore particles and magnetic particles required operating information. Consequently, the respective operating information can be adjusted or optimized as a function of the respective information assigned to the first and / or second mass flow, so that the efficiency of the corresponding disconnecting device is dependent on the current, by the first and / or second mass flow associated (n) Optimize information (s) represented operating conditions and can increase the yield, in particular the "unload" process.

Es ist dabei vorteilhaft, wenn die dem ersten und/oder zweiten Massestrom zugeordnete Information wenigstens einem eine Mindest- oder Höchstkonzentration an Erzpartikeln oder Magnetpartikeln angebenden Schwellwerts verglichen wird, wobei die Einstellung und/oder Änderung der Betriebsinformation unter Berücksichtigung des Schwellwerts erfolgt. Durch die Festlegung eines Schwellwerts, worunter selbstverständlich auch entsprechende Schwellwertbereiche verstanden werden, kann eine besonders einfache und schnelle Qualitätsüberwachung insbesondere des "unload"-Prozesses erfolgen und demnach Einstellungen und/oder Änderungen der wenigstens einen Betriebsinformation der entsprechenden Trennvorrichtung(en) zum Zwecke der Prozessoptimierung vorgenommen werden.It is advantageous if the information associated with the first and / or second mass flow is compared with at least one threshold value indicating a minimum or maximum concentration of ore particles or magnetic particles, the adjustment and / or modification of the operating information taking into account the threshold value. By setting a threshold, among which of course If corresponding threshold value ranges are also understood, a particularly simple and rapid quality monitoring, in particular of the "unload" process, can take place and accordingly adjustments and / or changes to the at least one operating information of the corresponding separating device (s) can be made for the purpose of process optimization.

Wird beispielsweise eine Überschreitung eines Schwellwerts, welcher selbstverständlich auch entsprechende Toleranzbereiche umfassen kann, in dem ersten Magnetpartikel enthaltenden Massestrom über die diesem zugeordnete Information erfasst, d.h. der Anteil an Erzpartikeln in dem ersten Massestrom ist über einen vorgegebenen oder vorgebbaren Normwert erhöht, erfolgt eine entsprechende Anpassung insbesondere wenigstens einer Betriebsinformation der die Erzpartikel-Magnetpartikel-Agglomerate in ein Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln trennenden Trennvorrichtung.If, for example, an exceeding of a threshold value, which of course can also comprise corresponding tolerance ranges, is detected in the first magnetic particle-containing mass flow via the information associated therewith, i. the proportion of ore particles in the first mass flow is increased above a predetermined or predeterminable standard value, a corresponding adjustment in particular at least one operating information of the ore particle magnetic particle agglomerates in a mixture of separately juxtaposed ore particles and magnetic particles separating separator.

Gleiches gilt selbstverständlich für eine Überschreitung eines entsprechenden Schwellwerts in dem zweiten Erzpartikel enthaltenden Massestrom, welche über die diesem zugeordnete Information erfasst wird. D.h., in diesem Fall ist der Anteil an Magnetpartikeln in dem zweiten Massestrom über einen vorgegebenen oder vorgebbaren Normwert erhöht, woraufhin eine entsprechende Anpassung insbesondere wenigstens einer Betriebsinformation der die Magnetpartikel aus dem Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln trennenden Trennvorrichtung erfolgt.The same applies, of course, to a exceeding of a corresponding threshold value in the second ore particle-containing mass flow, which is detected via the information associated therewith. In other words, in this case, the proportion of magnetic particles in the second mass flow is increased above a predetermined or predeterminable standard value, whereupon a corresponding adaptation of at least one operating information of the separating device separating the magnetic particles from the mixture of separately present ore particles and magnetic particles takes place.

Selbstverständlich können im Rahmen der Festlegung von Schwellwerten auch entsprechende Untergrenzen vorgesehen sein, welche bezogen auf den in dem ersten Massestrom enthaltenen Anteil an Magnetpartikeln bzw. bezogen auf den in dem zweiten Massestrom enthaltenen Anteil an Erzpartikeln nicht unterschritten werden dürfen. D.h., dass in diesem Fall bei Unterschreitung der Schwellwerte eine entsprechende Änderung und/oder Einstellung der Betriebsinformation der entsprechenden Trennvorrichtung(en) erfolgt.Of course, in the context of the definition of threshold values, corresponding lower limits may also be provided which, based on the proportion of magnetic particles contained in the first mass flow, or not less than the fraction of ore particles contained in the second mass flow, must not be exceeded. This means that in this case, when the thresholds are undershot, a corresponding change and / or adjustment of the operating information of the corresponding separation device (s).

Sämtliche Vorgänge werden über mehrere, miteinander kommunizierende dezentrale oder eine zentrale Steuereinrichtung ermittelt, erfasst und insbesondere über geeignete Auswertealgorithmen ausgewertet und gegebenenfalls in einem Speichermittel hinterlegt.All processes are determined by several, communicating with each other decentralized or a central control device, recorded and evaluated in particular via suitable evaluation algorithms and optionally deposited in a storage means.

Es kann zweckmäßig sein, wenn zunächst nur wenigstens eine Betriebsinformation der Trennvorrichtung zur Trennung der Erzpartikel-Magnetpartikel-Agglomerate in ein Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln eingestellt und/oder verändert wird und nach erfolgter Änderung der entsprechenden wenigstens einen Betriebsinformation eine erneute Ermittlung der dem ersten und/oder zweiten Massestrom zugeordneten Information erfolgt. Dieses Vorgehen ist insofern zweckmäßig, als die Einstellung und/oder Änderung der Betriebsinformationen der die Erzpartikel-Magnetpartikel-Agglomerate in ein Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln trennenden Trennvorrichtung eine von Haus aus optimierte Trennung der Erzpartikel/Magnetpartikel-Agglomerate in separat vorliegende Bestandteile gewährleistet, welche im Weiteren auch einen wesentlichen Einfluss auf die Ausbeute der durch die weitere, die Magnetpartikel aus dem Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln trennende Trennvorrichtung hat.It may be expedient if initially only at least one operating information of the separation device for separating the ore particle magnetic particle agglomerates in a mixture of separately present ore particles and magnetic particles adjusted and / or changed and after changing the corresponding at least one operating information, a new determination of Information associated with the first and / or second mass flow takes place. This procedure is expedient insofar as the adjustment and / or modification of the operating information of the separation of the ore particle magnetic particle agglomerates in a mixture of separately present ore particles and magnetic particles separation from the house optimized separation of the ore particles / magnetic particle agglomerates into separate components ensures, which in addition also has a significant influence on the yield of the separated by the further, the magnetic particles from the mixture of separately juxtaposed ore particles and magnetic particles separator.

Im Rahmen des erfindungsgemäßen Verfahrens erfolgt demnach bevorzugt vorrangig eine Einstellung und/oder Änderung wenigstens einer Betriebsinformation der die Erzpartikel-Magnetpartikel-Agglomerate in ein Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln trennenden Trennvorrichtung, bevor zusätzlich eine Einstellung und/oder Änderung wenigstens einer Betriebsinformation der oder einer die Magnetpartikel aus dem Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln trennenden Trennvorrichtung vorgenommen wird.In the context of the method according to the invention therefore preferably takes place an adjustment and / or change at least one operating information of the ore particles magnetic particle agglomerates in a mixture of separately juxtaposed ore particles and magnetic particles separating separator, before additionally adjusting and / or changing at least one operating information of or one of the magnetic particles from the mixture of separately side by side present ore particles and magnetic particles separating separator is made.

Nochmals wird an dieser Stelle erwähnt, dass es ebenso möglich ist, lediglich eine Einstellung und/oder Änderung wenigstens einer Betriebsinformation der oder einer die Magnetpartikel aus dem Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln trennenden Trennvorrichtung vorzunehmen.Again it is mentioned at this point that it is also possible to make only an adjustment and / or change of at least one operating information of the or a magnetic particles from the mixture of separately juxtaposed ore particles and magnetic particles separating separator.

Es ist denkbar, dass vor der tatsächlichen Einstellung und/oder Änderung der wenigstens einen Betriebsinformation eine damit voraussichtlich verbundene Änderung der ersten und/oder zweiten Information des ersten und/oder zweiten Massestroms simuliert wird. Eine Simulation, welche typischerweise über geeignete Simulationsalgorithmen erfolgt, ermöglicht sonach eine vorausschauende Bewertung der mit der vorzunehmenden Einstellung und/oder Änderung der wenigstens einen Betriebsinformation verbundenen Effekte im Hinblick auf die dem ersten und/oder zweiten Massestrom zugeordneten Information. Gegebenenfalls ist es denkbar, zeitlich zurückliegende Einstellungen und/oder Änderungen der jeweiligen Betriebsparameter respektive die damit verbundenen Effekte auf den ersten und/oder zweiten Massestrom in einem Speichermittel zu hinterlegen und im Rahmen der Simulation zu berücksichtigen. Derart ist eine weitgehend automatisierte Optimierung der Gehalte an unerwünschten Partikeln in den jeweiligen Masseströmen realisierbar.It is conceivable that, before the actual setting and / or change of the at least one operating information, a change of the first and / or second information of the first and / or second mass flow which is expected to be associated with it is simulated. A simulation, which typically takes place by means of suitable simulation algorithms, thus enables a forward-looking evaluation of the effects associated with the adjustment to be made and / or modification of the at least one operating information with regard to the information associated with the first and / or second mass flow. If appropriate, it is conceivable to store in time settings and / or changes in the respective operating parameters or the associated effects on the first and / or second mass flow in a storage means and to take this into account in the simulation. Such a largely automated optimization of the contents of unwanted particles in the respective mass flows can be realized.

Im Folgenden werden beispielhaft entsprechende Betriebsinformationen für die verschiedenen Trennvorrichtungen genannt. Die Aufzählung ist nicht abschließend.In the following, example, corresponding operating information for the various separation devices are called. The list is not exhaustive.

Als Betriebsinformation für die Trennvorrichtung zur Trennung der Erzpartikel-Magnetpartikel-Agglomerate in ein Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln wird beispielsweise die Konzentration und/oder Zusammensetzung eines die Erzpartikel-Magnetpartikel-Agglomerate in ihre Bestandteile trennenden Trennmittels und/oder eine Scherrate der zweiten Trennvorrichtung und/oder die Verweildauer der Erzpartikel-Magnetpartikel-Agglomerate in der zweiten Trennvorrichtung und/oder die Zusammensetzung der Suspension, insbesondere eines Wassergehalts der Suspension, verwendet.As operating information for the separator for separating the ore particle magnetic particle agglomerates into a mixture of separately present ore particles and magnetic particles, for example, the concentration and / or composition of the ore particles magnetic particle agglomerates separating agent which separates into its constituents and / or a shear rate of the second separation device and / or the residence time of the ore particle magnetic particle agglomerates in the second separation device and / or the composition of the suspension, in particular a water content of the suspension.

Als Betriebsinformation für die Trennvorrichtung zur Abtrennung der Magnetpartikel aus dem Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikel kann beispielsweise wenigstens ein magnetischer Parameter, insbesondere die Feldstärke und/oder ein Feldgradient, der Magnetvorrichtung, und/oder den zweiten Massestrom strömungstechnisch beeinflussende Mittel, insbesondere in Form von Blenden und/oder Verdrängungskörpern, und/oder die Strömungsgeschwindigkeit des zweiten Massestroms und/oder ein Spülstrom verwendet werden. Die Einstellung magnetischer Parameter ist insbesondere bei Verwendung eines Wandermagnetfeldseparators als eine der entsprechenden Trennvorrichtung zugeordnete Magnetvorrichtung effektiv. Hierunter fällt auch die Einstellung entsprechender Signalerregerformen, Signalfrequenzen, Signalphasenlagen relativer Signalverläufe wie Gegenlauf, Gleichlauf, Geschwindigkeit relativ zur Strömung der Suspension bzw. Pulpe, sowie weiterer, das Magnetfeld beeinflussender magnetischer Parameter.As operating information for the separation device for separating the magnetic particles from the mixture of separately present ore particles and magnetic particles, for example at least one magnetic parameter, in particular the field strength and / or a field gradient, the magnetic device, and / or the second mass flow fluidically influencing means, in particular Form of orifices and / or displacement bodies, and / or the flow rate of the second mass flow and / or a purge flow can be used. The adjustment of magnetic parameters is particularly effective when using a traveling magnetic field separator as a magnetic device associated with the corresponding separator. This also includes the setting of corresponding signal exciter forms, signal frequencies, signal phase positions of relative signal characteristics such as countercurrent, synchronization, velocity relative to the flow of the suspension or pulp, as well as further magnetic parameters influencing the magnetic field.

Die Ermittlung der dem ersten und/oder zweiten Massestrom zugeordneten Information kann kontinuierlich oder diskontinuierlich erfolgen. Im Falle einer kontinuierlichen Ermittlung der dem ersten und/oder zweiten Massestrom zugeordneten Information wird zu jedem Zeitpunkt ständig eine dem ersten und/oder zweiten Massestrom zugeordnete Information ermittelt, so dass ein vollständiges Abbild der Prozessführung im Hinblick auf die Ausbeute insbesondere des "unload"-Prozesses gegeben ist.The determination of the information associated with the first and / or second mass flow can be continuous or discontinuous. In the case of a continuous determination of the information associated with the first and / or second mass flow, an information associated with the first and / or second mass flow is continuously determined at all times, so that a complete image of the process control with regard to the yield, in particular of the "unload" Process is given.

Im Falle einer diskontinuierlichen Ermittlung der dem ersten und/oder dem zweiten Massestrom zugeordneten Information erfolgt eine Ermittlung der dem ersten und/oder dem zweiten Massestrom zugeordneten Information zu vorgegebenen oder vorgebbaren Zeitpunkten, beispielsweise einmal in der Minute. Beide Varianten erlauben eine sogenannte in situ oder online Ermittlung der dem ersten und/oder dem zweiten Massestrom zugeordneten Information. Unter einer diskontinuierlichen Ermittlung der dem ersten und/oder dem zweiten Massestrom zugeordneten Information ist jedoch auch eine Probenentnahme aus dem ersten und/oder zweiten Massestrom zu verstehen, welche Probe separat zu dem erfindungsgemäßen Verfahren etwa in einem Labor auf ihre entsprechende Zusammensetzung geprüft wird.In the case of a discontinuous determination of the information associated with the first and / or the second mass flow a determination of the information associated with the first and / or the second mass flow at predetermined or predefinable times, for example once a minute. Both variants allow a so-called in situ or online determination of the information associated with the first and / or the second mass flow. However, a discontinuous determination of the information associated with the first and / or the second mass flow also includes sampling from the first and / or second mass flow, which sample is tested separately for the method according to the invention in a laboratory for its corresponding composition.

Bevorzugt erfolgt anhand der kontinuierlichen Ermittlung der dem ersten und/oder dem zweiten Massestrom zugeordneten Information eine kontinuierliche Regelung des Verfahrens. Mithin ist im Rahmen des erfindungsgemäßen Verfahrens kontinuierlich ein Maß für den Anteil an Erzpartikeln in dem ersten, Magnetpartikel enthaltenden Massestrom und/oder ein Maß für den Anteil an Magnetpartikel in dem Erzpartikel enthaltenden, zweiten Massestrom ermittelbar. Die kontinuierliche Ermittlung der entsprechenden, dem ersten und/oder zweiten Massestrom zugeordneten Information erlaubt sonach eine kontinuierliche bzw. dynamische Regelung bzw. Optimierung des Prozesses, so dass die Prozessführung sich ändernden Prozessparametern, wie etwa der Erzzusammensetzung, schnell, d.h. gegebenenfalls sogar in Echtzeit, nachgestellt wird.Preferably, based on the continuous determination of the information associated with the first and / or the second mass flow, a continuous regulation of the method takes place. Consequently, in the context of the method according to the invention, a measure of the proportion of ore particles in the first mass flow containing magnetic particles and / or a measure of the proportion of magnetic particles in the ore particle containing second mass flow can be continuously determined. The continuous determination of the corresponding information associated with the first and / or second mass flow thus permits a continuous or dynamic control or optimization of the process, so that the process management is quickly, i.e., rapidly, subject to changing process parameters, such as ore composition. possibly even in real time, is readjusted.

Bezüglich der die Erzpartikel-Magnetpartikel-Agglomerate in ihre Bestandteile, d.h. in ein Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln, trennenden Trennvorrichtung ist es möglich, dass die in diese Trennvorrichtung zugeführten Erzpartikel-Magnetpartikel-Agglomerate chemisch, insbesondere über eine Veränderung des pH-Werts und/oder Zugabe von chemischen Trenn- und/oder Lösungsmitteln, und/oder physikalisch, insbesondere durch Veränderung der Temperatur, und/oder mechanisch, insbesondere von einer der entsprechenden Trennvorrichtung zugeordneten Ultraschallvorrichtung erzeugten Ultraschallwellen, getrennt werden. Die Aufzählung ist lediglich beispielhaft und keinesfalls vollständig, so dass auch andere, gleichwirkende Möglichkeiten der Trennung der Erzpartikel-Magnetpartikel-Agglomerate in ihre Bestandteile vorstellbar sind.With regard to the orbiting particle magnetic particle agglomerates in their constituents, ie, in a mixture of separately present ore particles and magnetic particles, separating device, it is possible that the supplied into this separator ore magnetic particle agglomerates chemically, in particular via a change in the pH Value and / or addition of chemical solvents and / or solvents, and / or physically, in particular by changing the temperature, and / or mechanically, in particular by an ultrasonic device associated with the corresponding separation device generated ultrasonic waves, to be separated. The list is merely exemplary and in no way complete, so that other, equally effective ways of separating the ore particle magnetic particle agglomerates are conceivable in their components.

Neben dem erfindungsgemäßen Verfahren betrifft die vorliegende Erfindung auch eine Vorrichtung zur Gewinnung von nichtmagnetischen Erzen aus einer Erzpartikel-Magnetpartikel-Agglomerate enthaltenden Suspension. Die Vorrichtung umfasst wenigstens einen Mischreaktor zur Vermischung einer nichtmagnetische Erzpartikel sowie Magnetpartikel enthaltenden Suspension unter Ausbildung von Erzpartikel-Magnetpartikel-Agglomeraten, wenigstens eine wenigstens eine Magnetvorrichtung aufweisende erste Trennvorrichtung zur Abscheidung der Erzpartikel-Magnetpartikel-Agglomerate aus der Suspension, wenigstens eine zweite Trennvorrichtung zur Trennung der Erzpartikel-Magnetpartikel-Agglomerate in ein Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln, wenigstens eine dritte Trennvorrichtung zur Abtrennung der Magnetpartikel aus dem Gemisch aus separat nebeneinander vorliegenden Erzpartikeln und Magnetpartikeln, wenigstens eine Erfassungseinrichtung zur Ermittlung wenigstens einer ein Maß für den Anteil an Erzpartikeln in einem Magnetpartikel enthaltenden Massestrom angebenden Information und/oder zur Ermittlung wenigstens einer ein Maß für den Anteil an Magnetpartikeln in einem Erzpartikel enthaltenden Massestrom sowie wenigstens eine Steuer- und/oder Regeleinrichtung, welche Steuer- und/oder Regeleinrichtung wenigstens ein maschinenlesbares Programmmittel umfasst, welches zur Steuerung und/oder Regelung der Vorrichtung zur Durchführung des vorstehend beschriebenen erfindungsgemäßen Verfahrens ausgebildet ist.In addition to the method according to the invention, the present invention also relates to a device for obtaining non-magnetic ores from a suspension containing ore particles and magnetic particle agglomerates. The apparatus comprises at least one mixing reactor for mixing a nonmagnetic ore particles and magnetic particle containing suspension to form ore particle magnetic particle agglomerates, at least one first separator having at least one magnetic device for separating the ore particle magnetic particle agglomerates from the suspension, at least one second separation device for separation the ore particle magnetic particle agglomerates in a mixture of separately present ore particles and magnetic particles, at least a third separation device for separating the magnetic particles from the mixture of separately present ore particles and magnetic particles, at least one detection means for determining at least one of the degree of the proportion of ore particles in a magnetic particle containing mass flow information indicating and / or for determining at least one measure of the proportion of magnetic particles in an E and at least one control and / or regulating device, which control and / or regulating device comprises at least one machine-readable program means, which is designed for controlling and / or regulating the device for carrying out the method according to the invention described above.

Die Erfindung betrifft weiter eine Steuer- und/oder Regeleinrichtung zur Steuerung und/oder Regelung einer vorstehend beschriebenen Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens. Die Steuer- und/oder Regeleinrichtung umfasst wenigstens ein maschinenlesbares Programmmittel, welches Steuer- und/oder Regelbefehle zur Steuerung und/oder Regelung der Vorrichtung zur Durchführung des vorstehend beschriebenen Verfahrens umfasst.The invention further relates to a control and / or regulating device for controlling and / or regulating a device described above for carrying out the method according to the invention. The control and / or regulating device comprises at least one machine-readable program means which comprises control and / or regulating commands for controlling and / or regulating the device for carrying out the method described above.

Die Erfindung betrifft weiter ein maschinenlesbares Programmmittel für eine Steuer- und/oder Regeleinrichtung wie vorstehend beschrieben.The invention further relates to a machine-readable program means for a control and / or regulating device as described above.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus dem im Folgenden beschriebenen Ausführungsbeispiel sowie anhand der Zeichnung. Dabei zeigt:

Fig. 1
ein Blockschaubild des erfindungsgemäßen Verfahrens zur Gewinnung von nichtmagnetischen Erzen aus einer Erzpartikel-Magnetpartikel-Agglomerate enthaltenden Suspension.
Further advantages, features and details of the invention will become apparent from the embodiment described below and from the drawing. Showing:
Fig. 1
a block diagram of the method according to the invention for the recovery of non-magnetic ores from a suspension containing ore particles magnetic particle agglomerates.

Fig. 1 zeigt ein Blockschaubild des erfindungsgemäßen Verfahrens zur Gewinnung von nichtmagnetischen Erzen aus einer Erzpartikel-Magnetpartikel-Agglomerate enthaltenden Suspension. Es handelt sich dabei vorzugsweise um einen kontinuierlichen Prozess.1 shows a block diagram of the process according to the invention for obtaining non-magnetic ores from a suspension containing ore particles and magnetic particle agglomerates. It is preferably a continuous process.

In einem ersten Verfahrensschritt (vgl. Kasten 1) wird in einem einer Vorrichtung zur Gewinnung von nichtmagnetischen Erzen aus einer nichtmagnetische Erzpartikel E sowie Magnetpartikel M enthaltenen Suspension, welche Vorrichtung als magnetische Flotationszelle bezeichnet werden kann, zugehörigen Mischreaktor eine Pulpe P, Magnetpartikel M zugeführt. Die Pulpe P besteht im Wesentlichen aus nichtmagnetischen Erzpartikeln E, wie z.B. Cu2S-Partikeln, die Magnetpartikel M liegen z.B. in Form von Magnetit (Fe3O4), gegebenenfalls bereits hydrophobiert, vor. Es erfolgt unter Zugabe weiterer Zusätze, wie insbesondere Hydrophobierungsmitteln H, welche eine Hydrophobierung der Erzpartikel E ermöglichen, ein Mischvorgang der in dem Mischreaktor zugeführten Stoffe.In a first method step (see Box 1), a pulp P, magnetic particles M is fed to a mixing apparatus connected to a device for extracting non-magnetic ores from a non-magnetic ore particles and magnetic particles M suspension, which device can be referred to as a magnetic flotation cell. The pulp P consists essentially of non-magnetic ore particles E, such as Cu 2 S particles, the magnetic particles M are, for example in the form of magnetite (Fe 3 O 4 ), optionally already hydrophobic, before. It is carried out with the addition of other additives, such as in particular water repellents H, which allow a hydrophobization of the ore particles E, a mixing process of the substances supplied in the mixing reactor.

In dem zweiten Verfahrensschritt (vgl. Kasten 2) erfolgt der sogenannte "load"-Prozess, bei welchem sich die hydrophobierten Magnetpartikel M an die hydrophobierten Erzpartikel E lagern respektive mit diesen unter Ausbildung von Erzpartikel-Magnetpartikel-Agglomeraten A wechselwirken. Die sonach in der Suspension enthaltenen Erzpartikel-Magnetpartikel-Agglomerate A umfassen wenigstens einen hydrophobierten Magnetpartikel M und wenigstens einen hydrophobierten Erzpartikel E. Dabei sind die Magnetpartikel M als Trägerpartikel für die Erzpartikel E zu erachten sind.In the second process step (see Box 2), the so-called "load" process takes place in which the hydrophobized magnetic particles M are deposited on the hydrophobized ore particles E or interact with them to form ore magnetic particle agglomerates A. The ore particle magnetic particle agglomerates A contained in the suspension comprise at least one hydrophobized magnetic particle M and at least one hydrophobized ore particle E. The magnetic particles M are to be regarded as carrier particles for the ore particles E.

Wesentliche Einflussfaktoren zur Bildung einer effizienten Ausbeute an Erzpartikel-Magnetpartikel-Agglomeraten A sind die Mischdauer, während des Mischvorgangs herrschende Scherkräfte sowie gegebenenfalls der Mahlgrad respektive die Korngröße bzw. Korngrößenverteilung der in der Pulpe P enthaltenen Erzpartikel E.Essential influencing factors for the formation of an efficient yield of ore particle magnetic particle agglomerates A are the mixing time, shearing forces prevailing during the mixing process and, if appropriate, the freeness or respectively the particle size or particle size distribution of the ore particles E. contained in the pulp P.

In dem dritten Verfahrensschritt (vgl. Kasten 4) erfolgt ein Abscheiden der Erzpartikel-Magnetpartikel-Agglomerate A von der Gangart G. Die Abtrennung erfolgt magnetisch mittels einer eine Magnetvorrichtung aufweisenden ersten Trennvorrichtung. Die aufgrund der Magnetpartikel M magnetischen Erzpartikel-Magnetpartikel-Agglomerate A sammeln sich im Bereich der Magnetvorrichtung an und können derart ausgetragen und derart größtenteils von der Gangart G separiert werden. Nicht agglomerierte Magnetpartikel M und Erzpartikel E sowie weitere in der als disperses System zu sehenden Pulpe P werden als Rückstände (so genanntes Tailing) abgeführt (vgl. Pfeil 3).In the third process step (see box 4), the ore particle magnetic particle agglomerates A are separated from gait G. Separation takes place magnetically by means of a first separation device having a magnetic device. The magnetic particles magnetic particle agglomerates A, which are magnetic due to the magnetic particles M, accumulate in the region of the magnetic device and can be discharged in such a way and for the most part separated from the gait G. Non-agglomerated magnetic particles M and ore particles E as well as further pulp P seen as a disperse system are removed as residues (so-called tailing) (see arrow 3).

In dem nachfolgenden vierten Verfahrensschritt (vgl. Kasten 5) werden die konzentrierten Erzpartikel-Magnetpartikel-Agglomerate A einer zweiten Trennvorrichtung zugeführt, in welcher die Erzpartikel-Magnetpartikel-Agglomerate A in ein Gemisch aus separat nebeneinander vorliegenden ungebundenen Erzpartikeln E und Magnetpartikeln M getrennt werden (sogenannter "unload"-Prozess). Die Trennung der Erzpartikel-Magnetpartikel-Agglomerate A kann beispielsweise chemisch, insbesondere über eine Veränderung des pH-Werts und/oder eine Zugabe von chemischen Trennmitteln T erfolgen. Denkbar ist auch der Einsatz von einer der zweiten Trennvorrichtung zugeordneten Ultraschalleinrichtung eingebrachten Ultraschallwellen.In the subsequent fourth process step (see Box 5), the concentrated ore particle magnetic particle agglomerates A are fed to a second separation apparatus in which the ore particle magnetic particle agglomerates A are separated into a mixture of separately juxtaposed unbound ore particles E and magnetic particles M. so-called "unload" process). The separation of the ore particle magnetic particle agglomerates A, for example, chemically, in particular via a change in the pH and / or an addition of chemical release agents T take place. Also conceivable is the use of ultrasound waves introduced into the ultrasonic device associated with the second separating device.

Insgesamt liegt auch hier ein Mischvorgang vor, der durch Einbringen von Scherkräften und chemischen Substanzen in Form der beispielsweise auf Tensiden basierenden Trennmitteln T eine Dehydrophobierung der Magnetpartikel M und Erzpartikel E bewirkt, welche die Erzpartikel-Magnetpartikel-Agglomerate A in ihre Bestandteile zersetzt. Es ist möglich, dass in der zweiten Trennvorrichtung weiterhin ein bestimmter Anteil an Gangart G vorliegt, welcher in dem vorherigen dritten Verfahrensschritt nicht ordnungsgemäß abgetrennt werden konnte.Overall, here is a mixing process that causes a dehydrophobicization of the magnetic particles M and ore particles E by introducing shear forces and chemical substances in the form of, for example, based on surfactants release agent T, which decomposes the ore particles magnetic particle agglomerates A into their constituents. It is possible that in the second separation device, a certain proportion of gait G is still present, which could not be properly separated in the previous third process step.

In dem mit 6 bezeichneten Kasten ist der "unload"-Prozess weitgehend abgeschlossen, d.h. es liegt ein Gemisch aus separat nebeneinander vorliegenden ungebundenen Erzpartikeln E und Magnetpartikeln M vor. Die isoliert vorliegenden Magnetpartikel M werden über eine dritte, eine Magnetvorrichtung, insbesondere einen Wanderfeldmagnetseparator, umfassende Trennvorrichtung magnetisch von den nichtmagnetischen Erzpartikeln E separiert und in einen ersten Magnetpartikel M enthaltenden Massestrom MS1 überführt.In the box labeled 6, the "unload" process is largely completed, i. there is a mixture of separately present unbound ore particles E and magnetic particles M. The isolated magnetic particles M are magnetically separated from the non-magnetic ore particles E via a third separating device comprising a magnetic device, in particular a traveling-field magnetic separator, and converted into a mass flow MS1 containing a first magnetic particle M.

Ersichtlich kann der erste Massestrom MS1 rückgeführt werden, so dass die in diesem enthaltenen Magnetpartikel M zu Prozessbeginn erneut verwendet werden können (vgl. Pfeil 10). Entsprechend kann der Gesamtprozess in ökonomischer und ökologischer Hinsicht optimiert werden.As can be seen, the first mass flow MS1 can be recycled, so that the magnetic particles M contained in it can be reused at the beginning of the process (see arrow 10). Accordingly, the overall process can be optimized in economic and environmental terms.

Die Erzpartikel E werden in einen zweiten Erzpartikel E enthaltenden Massestrom MS2 überführt, welcher im Weiteren entwässert bzw. getrocknet wird (vgl. Kasten 7), so dass nach Entwässerung respektive Trocknung weitestgehend getrocknete Erzpartikel E vorliegen. Das Wasser W wird separat abgeführt. Idealerweise enthält der erste Massestrom MS1 ausschließlich Magnetpartikel M und der zweite Massestrom MS2 ausschließlich Erzpartikel E. Dies ist in der Praxis jedoch schwer realisierbar, so dass es zu gewissen Verlusten an in dem ersten Wasserstrom MS1 gebundenen Erzpartikeln E sowie in dem zweiten Massestrom MS2 gebundenen Magnetpartikeln M kommt.The ore particles E are converted into a mass stream MS2 containing a second ore particle E, which is subsequently dehydrated or dried (cf., box 7), so that dried ore particles E are largely present after dehydration or drying. The water W is discharged separately. Ideally, the first mass flow MS1 contains only magnetic particles M and the second mass flow MS2 exclusively ore particles E. However, this is difficult to realize in practice, so that there are certain losses of magnetic particles bound in the first water flow MS1 and magnetic particles bound in the second mass flow MS2 M is coming.

Das erfindungsgemäße Verfahren zeichnet sich nun dadurch aus, dass eine Ermittlung wenigstens einer ein Maß für den Anteil an Erzpartikeln E in dem ersten Massestrom MS1 beschreibenden, dem ersten Massestrom MS1 zugeordneten Information I1 und/oder eine Ermittlung wenigstens einer ein Maß für den Anteil an Magnetpartikeln M in dem zweiten Massestrom MS2 beschreibenden, dem zweiten Massestrom MS2 zugeordneten Information 12 erfolgt. Entsprechend kann die Zusammensetzung, der Reinheitsgrad bzw. Verschmutzungsgrad der jeweiligen Masseströme MS1, MS2, welcher gleichermaßen ein Maß für die Ausbeute insbesondere des "unload"-Prozesses darstellt, erfasst und im Weiteren für die Prozessführung des kontinuierlich arbeitenden erfindungsgemäßen Verfahrens berücksichtigt werden.The method according to the invention is characterized in that a determination of at least one information I1 describing a measure of the proportion of ore particles E in the first mass flow MS1 and associated with the first mass flow MS1 and / or a determination of at least one measure of the proportion of magnetic particles M in the second mass flow MS2 descriptive, the second mass flow MS2 associated information 12 takes place. Accordingly, the composition, the degree of purity or degree of contamination of the respective mass flows MS1, MS2, which likewise represents a measure of the yield, in particular of the "unload" process, can be detected and taken into account for the process control of the continuously operating method according to the invention.

Die Ermittlung der dem ersten und/oder dem zweiten Massestrom MS1, MS2 zugeordneten Informationen I1, 12 erfolgt vorzugsweise kontinuierlich mittels Röntgenfluoreszenzanalyse.The determination of the information I1, 12 assigned to the first and / or the second mass flow MS1, MS2 preferably takes place continuously by means of X-ray fluorescence analysis.

Es ist weiterhin möglich, dass anhand der dem ersten und/oder zweiten Massestrom MS1, MS2 zugeordneten Information I1, 12 wenigstens eine für den Betrieb der zweiten und/oder dritten Trennvorrichtung erforderliche Betriebsinformation eingestellt und/oder verändert wird. Mithin wird im Hinblick auf den kontinuierlich erfassten Reinheitsgrad bzw. die kontinuierlich erfasste Zusammensetzung der Masseströme MS1, MS2 ein Steuersignal an die zweite und/oder dritte Trennvorrichtung gegeben, wobei anhand des Steuersignals entsprechende Betriebsinformation oder Betriebsparameter optimiert werden können.It is furthermore possible for at least one operating information required for the operation of the second and / or third separation device to be adjusted and / or changed on the basis of the information I1, 12 assigned to the first and / or second mass flow MS1, MS2. Consequently, with regard to the continuously detected purity level or the continuously detected composition of the mass flows MS1, MS2, a control signal is given to the second and / or third separation device, wherein based on the control signal corresponding operating information or operating parameters can be optimized.

Hierbei können die dem ersten und/oder zweiten Massestrom MS1, MS2 zugeordnete Informationen I1, 12 mit wenigstens einem eine Mindest- oder Höchstkonzentration an Erzpartikeln E oder Magnetpartikeln M angebenden Schwellwert verglichen werden. Entsprechend erfolgt die Einstellung und/oder Änderung der Betriebsinformation unter Berücksichtigung des Schwellwerts. Der Schwellwert kann auch als Schwellwertbereich zu sehen sein und bestimmte Toleranzbereiche berücksichtigen.In this case, the information I1, 12 assigned to the first and / or second mass flow MS1, MS2 can be compared with at least one threshold value indicating a minimum or maximum concentration of ore particles E or magnetic particles M. Accordingly, the setting and / or change of the operating information takes place taking into account the threshold value. The threshold value can also be seen as a threshold range and take into account certain tolerance ranges.

Insgesamt ist eine Dynamisierung des Verfahrens möglich, da in Abhängigkeit der dem ersten und/oder zweiten Massestrom MS1, MS2 zugeordneten Informationen I1, 12 stets eine individuelle und bedarfsgerechte Anpassung der entsprechenden Betriebsinformationen bzw. Betriebsparameter der im Rahmen des erfindungsgemäßen Verfahrens verwendeten Trennvorrichtungen möglich ist.Overall, a dynamization of the method is possible because depending on the first and / or second mass flow MS1, MS2 associated information I1, 12 is always an individual and needs-based adaptation of the corresponding operating information or operating parameters of the separation devices used in the process according to the invention is possible.

Als Betriebsinformation für die zweite Trennvorrichtung kann z.B. die Konzentration und/oder Zusammensetzung eines die Erzpartikel-Magnetpartikel-Agglomerate A in ihre Bestandteile trennenden Trennmittels T und/oder eine Scherrate der zweiten Trennvorrichtung und/oder die Verweildauer der Erzpartikel-Magnetpartikel-Agglomerate A in der zweiten Trennvorrichtung und/oder die Zusammensetzung der Pulpe P, insbesondere eines Wassergehalts der Pulpe P, verwendet werden.As operating information for the second separator, e.g. the concentration and / or composition of a release agent T separating the ore particle magnetic particle agglomerates A into their constituents and / or a shear rate of the second separation device and / or the residence time of the ore particle magnetic particle agglomerates A in the second separation device and / or the composition of the Pulp P, in particular a water content of the pulp P can be used.

Als Betriebsinformation für die dritte Trennvorrichtung kann z.B. wenigstens ein magnetischer Parameter, insbesondere die Feldstärke und/oder ein Feldgradient der Magnetvorrichtung, und/oder den zweiten Massestrom strömungstechnisch beeinflussende Mittel, insbesondere in Form von Blenden und/oder Verdrängungskörpern, und/oder die Strömungsgeschwindigkeit des zweiten Massestroms und/oder ein Spülstrom verwendet werden.As operation information for the third separator, e.g. at least one magnetic parameter, in particular the field strength and / or a field gradient of the magnetic device, and / or the second mass flow fluidly influencing means, in particular in the form of orifices and / or displacement bodies, and / or the flow rate of the second mass flow and / or a purge flow become.

Die gestrichelt dargestellten Kästen 8, 9 zeigen an, dass anhand der durch die erste bzw. zweite Information I1, 12 erhaltenen Kenntnisse über die Zusammensetzung der Masseströme MS1, MS2 gegebenenfalls eine erneuter Mischvorgang (vgl. Kasten 8) durchgeführt werden kann, um Rückstande, d.h. nicht getrennte bzw. gespaltene Erzpartikel-Magnetpartikel-Agglomerate A nach der in dem fünften Verfahrensschritt durchgeführten Trennung erneut zu durchmischen. Hierbei kann eine Zugabe eines höher konzentrierten Trennungsmittels T zweckdienlich sein, welche wiederum in Abhängigkeit der ersten bzw. zweiten Information I1, 12 gesteuert werden kann. Entsprechend erfolgt nachfolgend erneut eine Entwässerung bzw. Trocknung (vgl. Kasten 9).The boxes 8, 9 shown in dashed lines indicate that, on the basis of the knowledge of the composition of the mass flows MS1, MS2 obtained by the first or second information I1, 12, a renewed mixing process may be necessary (cf. 8) may be performed to remix residues, ie non-separated or split ore magnetic particle agglomerates A, after the separation performed in the fifth process step. In this case, it may be expedient to add a more highly concentrated separating agent T, which in turn can be controlled as a function of the first or second information I1, 12. Accordingly, a subsequent dewatering or drying (see Box 9).

Besondere Ausführungsformen des erfindungsgemäßen Verfahrens sehen vor, dass zunächst nur wenigstens eine Betriebsinformation der zweiten Trennvorrichtung eingestellt und/oder verändert wird und nach erfolgter Änderung der entsprechenden wenigstens einen Betriebsinformation eine erneute Ermittlung der dem ersten und/oder zweiten Massestrom MS1, MS2 zugeordneten Information I1, 12 erfolgt.Particular embodiments of the method according to the invention provide that initially only at least one operating information of the second separating device is set and / or changed and, after the change of the corresponding at least one operating information, a new determination of the information I1 assigned to the first and / or second mass flow MS1, MS2, 12 takes place.

Weiterhin ist es denkbar, dass vor der tatsächlichen Einstellung und/oder Änderung der wenigstens einen Betriebsinformation eine damit voraussichtlich verbundene Änderung der ersten und/oder zweiten Information I1, 12 des ersten und/oder zweiten Massestroms MS1, MS2 simuliert wird.Furthermore, it is conceivable that before the actual setting and / or change of the at least one operating information, a change of the first and / or second information I1, 12 of the first and / or second mass flow MS1, MS2 which is expected to be associated with it is simulated.

Claims (13)

  1. Method for obtaining non-magnetic ores from a suspension containing ore particle-magnetic particle agglomerates (A), comprising the steps:
    - dividing ore particle-magnetic particle agglomerates (A) precipitated from the suspension into a mixture of ore particles (E) and magnetic particles (M) which are present together but separately,
    - separating out the magnetic particles (M) from the mixture,
    - forming a first mass flow (MS1) containing magnetic particles (M) and a second mass flow (MS2) containing ore particles (E),
    characterised in that, in order to determine the efficiency of at least one of the separation processes described above, at least one item of information (I1) associated with the first mass flow (MS1) and giving a measure of the content of ore particles (E) in the first mass flow (MS1) and/or at least one item of information (I2) associated with the second mass flow (MS2) and giving a measure of the content of magnetic particles (M) in the second mass flow (MS2) is determined.
  2. Method according to claim 1,
    characterised in that, based on the item of information (I1, I2) associated with the first and/or second mass flow (MS1, MS2), at least one item of operating information required for the operation of at least one separating device for separating the ore particle-magnetic particle agglomerates (A) into a mixture of ore particles (E) and magnetic particles (M) which are present together but separately and/or at least one separating device for separating the magnetic particles (M) from the mixture of ore particles (E) and magnetic particles (M) which are present together but separately, is set and/or adjusted.
  3. Method according to claim 2,
    characterised in that the item of information (I1, I2) associated with the first and/or second mass flow (MS1, MS2) is compared with at least one threshold value giving a minimum or maximum concentration of ore particles (E) or magnetic particles (M), wherein the setting and/or adjustment of the operating information is carried out taking account of the threshold value.
  4. Method according to claim 2 or 3,
    characterised in that initially only at least one item of operating information relating to the separating device for separating the ore particle-magnetic particle agglomerates (A) into a mixture of ore particles (E) and magnetic particles (M) which are present together but separately is set and/or adjusted and, following the change of the relevant at least one item of operating information, renewed determination of the item of information (I1, I2) associated with the first and/or second mass flow (MS1, MS2) is carried out.
  5. Method according to one of claims 2 to 4,
    characterised in that before the actual setting and/or adjustment of the at least one item of operating information, an adjustment expected to be associated therewith of the first and/or second item of information (I1, I2) relating to the first and/or second mass flow (MS1, MS2) is simulated.
  6. Method according to one of claims 2 to 5,
    characterised in that, as the operating information for the separating device for separating the ore particle-magnetic particle agglomerates (A) into a mixture of ore particles (E) and magnetic particles (M) which are present together but separately, the concentration and/or the composition of a separating agent (T) separating the ore particle-magnetic particle agglomerates (A) into the constituents thereof and/or a shear rate of the second separating device and/or the dwell time of the ore particle-magnetic particle agglomerates (A) in the second separating device and/or the composition of the suspension, in particular, a water content of the suspension, is used.
  7. Method according to one of claims 2 to 6,
    characterised in that, as the operating information for the separating device for separating the magnetic particles (M) out of the mixture of ore particles (E) and magnetic particles (M) which are present together but separately, at least one magnetic parameter, in particular, the field strength and/or a field gradient of the magnetic device, and/or means for influencing the flow characteristics of the second mass flow (MS2), in particular in the form of apertures and/or displacing elements, and/or the flow rate of the second mass flow (MS2) and/or a flushing flow is used.
  8. Method according to one of the preceding claims,
    characterised in that the determination of the item of information (I1, I2) associated with the first and/or second mass flow (MS1, MS2) is carried out by means of X-ray fluorescence spectrometry.
  9. Method according to one of the preceding claims,
    characterised in that the determination of the item of information (I1, I2) associated with the first and/or second mass flow (MS1, MS2) is carried out continuously or discontinuously.
  10. Method according to claim 9,
    characterised in that continuous regulation of the method is carried out by means of the continuous determination of the items of information (I1, I2) associated with the first and/or the second mass flow (MS1, MS2).
  11. Device for obtaining non-magnetic ores from a suspension containing non-magnetic ore particles (E) and magnetic particles (M), comprising at least one stirred-tank reactor for mixing a suspension containing non-magnetic ore particles (E) and magnetic particles (M), forming ore particle-magnetic particle agglomerates (A), at least one first separating device comprising at least one magnetic device for separating the ore particle-magnetic particle agglomerates (A) out of the suspension, at least one second separating device for dividing the ore particle-magnetic particle agglomerates (A) into a mixture of ore particles (E) and magnetic particles (M) which are present together but separately, at least one third separating device for separating the magnetic particles (M) out of the mixture of ore particles (E) and magnetic particles (M) which are present together but separately, characterised by at least one detecting device for determining at least one item of information (I1) giving a measure for the content of ore particles (E) in a mass flow (MS1) containing magnetic particles (M) and/or for determining at least one item of information (I2) giving a measure for the content of magnetic particles (M) in a mass flow (MS2) containing ore particles (E) and at least one control and/or regulating device for controlling and/or regulating the stirred-tank reactor and/or the separating devices and/or the detecting device, said control and/or regulating device comprising at least one machine-readable program means, which comprises program means for controlling and/or regulating the device for carrying out the method according to one of the preceding claims.
  12. Control and/or regulating device for a device according to claim 11, comprising at least one machine-readable program means for controlling and/or regulating the device for carrying out the method according to one of claims 1 to 10.
  13. Machine-readable program means for a control and/or regulating device according to claim 12.
EP11170778.2A 2011-06-21 2011-06-21 Method for recovering non-magnetic ores from a suspension containing ore particle-magnetic particle agglomerates Active EP2537591B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
PL11170778T PL2537591T3 (en) 2011-06-21 2011-06-21 Method for recovering non-magnetic ores from a suspension containing ore particle-magnetic particle agglomerates
EP11170778.2A EP2537591B1 (en) 2011-06-21 2011-06-21 Method for recovering non-magnetic ores from a suspension containing ore particle-magnetic particle agglomerates
AU2012272068A AU2012272068A1 (en) 2011-06-21 2012-05-31 Method for obtaining non-magnetic ores from a suspension containing ore particle-magnetic particle agglomerates
PE2013002769A PE20140491A1 (en) 2011-06-21 2012-05-31 PROCEDURE FOR OBTAINING NON-MAGNETIC MINERALS FROM A SUSPENSION CONTAINING AGGLOMERATES OF MINERAL PARTICLES AND MAGNETIC PARTICLES
PCT/EP2012/060276 WO2012175308A1 (en) 2011-06-21 2012-05-31 Method for obtaining non-magnetic ores from a suspension containing ore particle-magnetic particle agglomerates
US14/128,758 US8991612B2 (en) 2011-06-21 2012-05-31 Method for obtaining non-magnetic ores from a suspension containing ore particle-magnetic particle agglomerates
RU2014101624/03A RU2014101624A (en) 2011-06-21 2012-05-31 METHOD FOR PRODUCING NON-METAL ORES FROM SUSPENSION CONTAINING AGLOMERATE OF ORE PARTICLES AND MAGNETIC PARTICLES
CN201280030058.XA CN103608118A (en) 2011-06-21 2012-05-31 Method for obtaining non-magnetic ores from a suspension containing ore particle-magnetic particle agglomerates
CL2013002709A CL2013002709A1 (en) 2011-06-21 2013-09-23 Procedure for obtaining non-magnetic minerals from a suspension containing agglomerates of mineral and magnetic particles, and where the effectiveness is determined by the proportion of mineral particles in said flow.

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Application Number Priority Date Filing Date Title
EP11170778.2A EP2537591B1 (en) 2011-06-21 2011-06-21 Method for recovering non-magnetic ores from a suspension containing ore particle-magnetic particle agglomerates

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EP2537591A1 EP2537591A1 (en) 2012-12-26
EP2537591B1 true EP2537591B1 (en) 2014-06-18

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EP (1) EP2537591B1 (en)
CN (1) CN103608118A (en)
AU (1) AU2012272068A1 (en)
CL (1) CL2013002709A1 (en)
PE (1) PE20140491A1 (en)
PL (1) PL2537591T3 (en)
RU (1) RU2014101624A (en)
WO (1) WO2012175308A1 (en)

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EP2537589A1 (en) * 2011-06-21 2012-12-26 Siemens Aktiengesellschaft Method for separating a material from a flowable primary material, device for separating a material from a flowable primary material and control and/or regulating device
EP2537591B1 (en) 2011-06-21 2014-06-18 Siemens Aktiengesellschaft Method for recovering non-magnetic ores from a suspension containing ore particle-magnetic particle agglomerates
DE102014200415A1 (en) 2013-12-20 2015-06-25 Siemens Aktiengesellschaft Process for the separation of a defined mineral substance phase from a ground ore

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US4643822A (en) * 1985-02-28 1987-02-17 The Secretary Of State For Trade And Industry In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Method of separation of material from material mixtures
GB2232514B (en) * 1989-04-24 1993-09-01 Yokogawa Electric Corp Programmable controller
JPH09248483A (en) * 1996-03-14 1997-09-22 Inaba Eiko Magnetic flocculation treatment apparatus of impurities in liquid
GB0410980D0 (en) * 2004-05-17 2004-06-16 Randox Lab Ltd Magnetic particle detector system and method of performing binding assay
EP2090367A1 (en) * 2008-02-15 2009-08-19 Siemens Aktiengesellschaft Method and device for continuous recovery of non-magnetic ores
CN201304357Y (en) * 2008-06-03 2009-09-09 赵平 Mobile type hydraulic transmission integrated device of pair roller grinding and magnetoelectric combined beneficiation
DE102008047842A1 (en) * 2008-09-18 2010-04-22 Siemens Aktiengesellschaft Apparatus and method for separating ferromagnetic particles from a suspension
DE102009038666A1 (en) * 2009-08-24 2011-03-10 Siemens Aktiengesellschaft Process for continuous magnetic ore separation and / or treatment and associated plant
EP2368639A1 (en) * 2010-03-23 2011-09-28 Siemens Aktiengesellschaft Method and device for magnetically separating a fluid
EP2537591B1 (en) 2011-06-21 2014-06-18 Siemens Aktiengesellschaft Method for recovering non-magnetic ores from a suspension containing ore particle-magnetic particle agglomerates

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AU2012272068A1 (en) 2013-12-19
CL2013002709A1 (en) 2014-01-24
PL2537591T3 (en) 2014-11-28
PE20140491A1 (en) 2014-04-16
US8991612B2 (en) 2015-03-31
EP2537591A1 (en) 2012-12-26
WO2012175308A1 (en) 2012-12-27
US20140124415A1 (en) 2014-05-08
RU2014101624A (en) 2015-07-27
CN103608118A (en) 2014-02-26

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